Plumber&#39;s wrench



FIG. 1 is a top and side perspective view of plumber's wrench embodying my design, wherein a typical faucet is illustrated in phantom for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a side elevational view thereof, the opposite side elevational view and the front and rear elevational views being identical;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a plumber's wrench, as shown as described. 